Key shelf and base.



E. B. CRAFT. KEY SHELF AND BASE. APPLICATION FILED MAY 9, 1910.

QQHUIIII'. U 7 "um l Wfnesses: I Awe/vim.-

M lam v Edward 5.00 1.-

mu/nz/ l II UhlItTiEli-t STATES ATENT @FFTC.

EDWARD B. CRAFT, OF HACKENSACK, NEW JERSEY, ASSIGNOR TO WESTERN ELECTRICCOMPANY, OF NEW YORK. N. Y.

. A CORPORATION 033' ILLINOIS.

KEY SHELF AND BASE.

1 ,Ufithiiilt).

Specification of Letters Patent.

Application filed May 9, 1910.

Pa tented Jan. 14;, it 9'13. Serial No. 560,193.

'[0 0/! ic/mm '7 may concern A Be it known that I, lfioimnn B. CRAFT, acitizen of the United States, residing at. Hackensack, in the county ofBerge and State of New Jersey, have invented a certain new and usefullnujroveiuent in Key Shelves and Bases, of which the following is afull, clear, concise, and exact description.

This invention relates boards and more espce to iiuprorements in theconstruction of .e key shelf and key base so as to permit. the longdinal adjustment of the key oasc at any d sired position with rcleren .2o the key shelf. and to provide improved means cl aittaclnnent.

The intention will be described by releronce to the accompanyingdrawings, and the parts, improyements or comlnuations which I reg; rd asnovel will be pointed out in the appended claims.

Like numerals of reference refer to corresponding parts intheaccompanying drawings, in. which Figure 1 is a plan View partlybroken away and partly in section of one end of my key shelf carrying akey base; Fig. 2 a transverseview, partly in section, taken on line 2,Fig. 1, of my key shelf and key base; Fig. 3 is a VlGW of an end portionof my key base with cooperating parts of the locking meansdisassociated; Fig. l is an enlarged View in cross section of one sideof the key shelf frame and an end portion of my key base mounted thereonshowing locking means on the key base and key shelf; and Fig. 5 is a.view of an end portion of the looking bars, and spacing block and theirsupport, showing the parts disconnected and the manner and means bywhich these parts are coupled.

Referring to the drawings, 1 is a body to telephone switch- 1 l portionor framework, preferably of wood,"

' ciently rigid mounting for said key bases.

The key shelf 1 is provided on the opposite inner faces of the key shelfframe surrounding the longitudinal opening with locking bars 4. Thesebars st are arranged in pairs extending the length of the key shelfwithin the opening and substantially parallel to and adjacent. theopposite sides of the opening and each other. One of each pair of theselocking bars 4. mounted longitudinally on the opposite inner lateralfaces of, the key shelf .tran'ievvork surrounding this" opening andfirmly attached to said key shelf framework by screws 5 or other suitable fastening means. The other bars of each pair are mi'iunted withinthe opening and in the key shelt' adjacent and substan tially parallelto the bars mounted on the opposite inner lateral faces of the key shelfframework, but spaced therefrom by blocks (3 disposed between the endsof the adjacent bars forming each pair. The locking bars are attached toopposite sides cl. these spacing blocks 6 by screws 7,.rivets or othersuit-able fastening means, and the blocks 6 carrying the locking barsare rigidly mounted on the transverse brace or supporting bar 3 at eachend of the key shelf. by means of a beltor screw 8, orother suitablemeans,

which passes through the hole 9 in the supporting bar 3 and engages thespacing block 3 to hold the same and the locking bars in position. Thelocking bars are thus held in fixed relation to the opposite sides ofthe Optlllllg in the key shelf, and in fixed relation to each other, anunobstructed channel space being thus formed between the bars of eachpair.

.2 is a key base mounted in the key shel and across said openingtherein. The key base 2 is adapt-"1 to carry tln buttons, plungers, keylevers and the other associated apparatus usual to a key base. Said keyase 2 is mounted on said key shelf in longitudinally slidable adjustmentor relation thereto by means of impending studs 10 or other suitablemeans mounted on said key base near each extremity thereof. These studs10 may be screwed, riveted or otherwise suitably fastened to said keybase. The studs extend into the channelbetween the locking bars 4;, andeach is provided with a threaded socket in its lower extremit adapted toreceive a screw 11, on which 1s loosely carried a collar or Washer 12,adapted to engage the lower faces of the lockin bars a The key base,which is made pret erably of metal and topped with a hard rule 1 er fromtee tacking ba 3 when the key 45 ber str i r to efierrt. e, elite finishand pin teetien its TPPQT surface, base may he moved l n itudirmlly ofthe with riownwiird'i y depenrli 1r let shelf in any desired pesltlen.

Sides 13. New each e 1 rty of the Although 1 have described. myinvention 5 base these sides 1.55 epwardly recessed t in great deteiLnevertt;eless I do not de: re

form it shoulder 14: Tlchis adapted to reto be limited to such detailsexcept as here .50

strain the key has, 2 0m transverse more izmfier e; ecified in .cclaims; but t ment between the app XS of locking fully zm clearly at ribed my izrventmra-- bars 1 in the key Shel". The studs 1.0 carry V-[hatX shim as I W and dcs'rre to secure 10 ing the washer and screw, whicheoiipcrate 0 4 utters TPzztent is:

01 grip with the locking bare to first" 1 1 l. The combinationedjustebly loci: the key '-"e in the A; switchboard, 03 a ke helposition Within the epening 0f the key at i 1 rein, a L 4 are preferablydisposer}. be'ween the e1: mounted r 1 in M 1L r5 ities of the key baseand e brim an. 1m: star. 0 charm! :tewfiiu I ortion 1 near the ends 0 1"i rally 'it 11 it the studs will 'l'mpend l on \ey w r 1 M paintcoincident with wetting; means. the adjacent locking 9 v 2. Theecmr'rieuileri 50 From this deseI-i tion it can be \switehbemfl, 0 :1Veye-bet;

seen that when it ifs (i to mount I twine opening I base within thelongitudinal eqeening in the I u nmnnted ilififlift twain" key shett ifthe screws 11 e116. 'WiLShELJ 1E2 unobstructed channel ten n said 11 penthe studs ne'er each cut? of base elf epen'u a. key base :uljreupremoved. from the Stu and the studs per-acct in we 1 ,;eye1n-n1f by5:1. are c icwnwzu dly in: rtcd into the charmels bars, and. means forlocking c A.

forme by the {L Quart 10c i1 32 's, the 158! to sai'd barre. base willbe in its proper p0 he In tccynone swittfl'lbcertt RI shelf and Whilepermitted 1 0 cut lmfigr having: a 10 k itmlmai opening" 'i'tmwin, u.

50 tuc'linaiiy of the key shelf will be ed h1g5 bars mmintcd en saidsnctt within s from tran eree mm'mnent t the cning, a, key wa e mintedma 1 1 3 screws 11 carrying the col ing; bme :1. 5% 11d menu .4

are then inserted in the the studs; and tigutcred the N21, 35 forcedinto 'contact with the 1m the locking bars and lock position. H it isdesired. to Tenure base from the key shelf vs c k the sellers are witlflf e a 40 may be readily n But it it is sired merely t0 Hit i" upon keyShel): by s]."c'1ing it 10: wily it of such adjustment is per mg thescrews; 1.1 and dlecngu cur carried 07; cut-h 100901; mounted m flnrsbeing; aide? in have and 11016 the keg; bit uni adjushnent "with thetrey

